CVE-2016-10709
pfSense before 2.3 allows remote authenticated users to execute arbitrary OS commands via a ‘|’ character in the status_rrd_graph_img.php graph parameter, related to _rrd_graph_img.php.
Date published : 2018-01-21
https://www.exploit-db.com/exploits/39709/
https://www.pfsense.org/security/advisories/pfSense-SA-16_01.webgui.asc